The Pāṇinīyavyākaraṇodāharaṇakośaḥ is an instrument for grasping in a concrete way both the functioning and the field of application of the complex grammatical system of the Aṣṭādhyāyi of Pāṇini along with the vārttika-s of Kātyāyana. To this end, the approximately 40,000 examples provided by the Mahābhāṣya, the Kāśikāvṛtti, the Bhāṣāvṛtti and the Siddhāntakaumudī, have been collected and made the subject of articles whose content corresponds to this dual objective. This work is, thus, in the form of a dictionary whose entries are those examples which are accessed either directly or through Aṣṭādhyāyi’s sūtra-s or by Indian grammatical terminology. In presenting this entire work, it seemed most appropriate to follow the presentation of Paninian grammar made by the Siddhāntakaumudī. Consequently, each of the volumes of the dictionary, from the second on, corresponds to a prakaraṇa of that commentary. The first volume, entitled The Book of Examples, gives a simple and clear overview of the basic data embodied in all the examples. The Pāṇinīyavyākaraṇodāharaṇakośaḥ is being published in both book and CD-ROM form.